Suppose a representative at car care service center receives a phone call every 4 minutes on average. Find the probability that she receives 4 phone calls in 20 minutes (round off to third decimal place).

Ten people meet and everyone shakes hands exactly once with everyone else. What is the total number of handshakes

There are 26 third graders and 32 fourth graders going on a field trip each van carries 10 students how many vans are needed

You deposit $1200 in an account. The account earns 2.7% simple interest rate. What is the balance of the account after 3 months?

Write a real-life problem situation that could be represented by the equation Y=65x. State what x, y, and 65 represent in your problem and explain how you know the problem represents a proportional relationship.

Write an expression with the five terms containing the coefficients 12 15 18 and 21

What is the vertex of y=x^2+2x-1?

Wholesale price $12.50. %Markup 78% what is the $Markup and retail sale price

The SAT mathematics scores in the state of Florida are approximately normally distributed with a mean of 500 and a standard deviation of 100.

The new pane will cost $91.00 plus an additional fee for installation. a local contractor charges $120 per hour for installation. if it only takes 45 minutes to replace the window, what will be the total cost?

What's the mean median mode range of 29.3 31.7 32.4 46.3 48.9